Glossary:
Cortisol: The major natural glucocorticoid (GC) in humans. It is the primary stress hormoneDopamine: A chemical that transmits messages in the brain and plays a role in movemen
Endorphin: A group of chemicals produced in the brain that reduce pain and positively affect mood
Gland: An organ that produces and releases one or more substances for use in the body. Some glands produce fluids that affect tissues or organs. Others produce hormones or participate in blood production
Hormones: Chemicals produced by glands in the body and circulated in the bloodstream. Hormones control the actions of certain cells or organs
Morphine: A narcotic drug used in the treatment of pain
Neurotransmitter: Chemicals that act as messengers between cells in the brain and nervous system; they transmit impulses across the gap from a neuron to another neuron, a muscle, or a gland
Oxytocin: Pituitary hormone that contributes to the start of labor and stimulates the breasts to release milk
Opioid: Any man-made drug that exhibits properties of opium and is given to treat pain
Serotonin (5 hydroxytryptamine or 5HT): is a monoamine neurotransmitter. It is believed to play an important role in the regulation of mood, sleep, emesis (vomiting), sexuality and appetite
